Heat gun



FIG. 1 is right side perspective view of a heat gun, embodying the new design;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is right side perspective view of a second embodiment of the heat gun, embodying the new design;

FIG. 10 is a left side perspective view thereof;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a rear elevation view thereof;

FIG. 13 is a left side elevation view thereof;

FIG. 14 is a right side elevation view thereof;

FIG. 15 is a top plan view thereof; and,

FIG. 16 is a bottom plan view thereof. 

CLAIM We claim the ornamental design for a heat gun, as shown and described. 